Wall for packing-cases.



No. 886,926. PATENTED MAY 5, 1908.

G. F. BISHOPRIG.

WALL FOR PACKING GASES. PPPP IOATION FILED MAR. 22, 1906.

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UNITED STATES PATENT OFFICE.

GEORGE FREDERICK BISHOIRIC, OF TORONTO, ONTARIO, CANADA, ASSIGNOR TO BISHOPRIG & COMPANY, OF TORONTO, CANADA, A FIRM.

WALL FOR PACKING-CASES.

Specification of Letters Patent.

Patented May 5, 1908.

To all whom it may concern:

Be it known that I, GEoRoE FREDERICK BISHOPRIO, of the city of Toronto, in the county of York, in the Province of Ontario, Canada,contractor,have invented certainnew and useful Improvements in Walls for Packing-Cases, of which the following is the specification. x

My invention is an improved article of manufacture, ap licable to form walls for packing cases an other purposes.

It consists of a layer of an adhesive asphaltum compound, on suitable flexible acking and combined with spaced strips of stiff material suchas wood adhering to the asphaltum compound surface.

The-dparticula'r details of construction of my sai invention are hereinafter more fully described and illustrated in ing drawings, in which:

Figure l, is a perspective View showing the stri in which one of the walls of my case is ma e. Fig. 2, is a view showing a substantially cylindrical package being made with my improved wall. Fig. 3 is a sectional plan the accompany- In the drawings like letters of reference indicate corres onding parts in each figure.

The aspha tum mixture used in this inven tion is a well known mixture of asphaltum and carbonate of lime, which has special water-proof and strongly adhesive qualities combined with flexibility, adapting it peculiarly to form in combination with the protecting strips, 2. wall for various purposes. These qualities, however, in order that they may be preserved unimpaired, by exposure to abrasion, need a protective covering. This I have found may be supplied cheaply and eflectively, by strips of wood, such as laths, or like material, applied to the asphaltum compound, while it 1s hot, and this may be caused to adhere and be securely held upon the surface. To this end there must be an outside layer of the asphaltum compound, and not a mere saturation-of the packing by the asphaltum compound.

In the preferred form of my invention, I use an inner layer of paper A, an inter-layer of asphalt mastic B, an inter-layer of paper O and an outer layer of asphalt mastic D having superimposed thereon strips E arranged crosswise. These strips D are su erimposed-while themastic is yet hot and w en the mastic cools are securely united thereto. The strips D are preferably made of wood although they may be made of any other suit able vmaterial to which the asphalt mastic will adhere.

Although I describe my wall as composed of four layers, it will be readily understood that it may be made of any number of layers,

' from two upwards depending upon the use to which the packages are to be ap lied.

I have shown, for the sake o illustration, my invention applied to the construction of a package in the form of a barrel. The ends F of this package may be made of wood or any other suitable material and the remaining wall formed of my composite material hereinbefore described, which is secured to the edges of the ends by nails or any other suitable fastening devices or means.

When formed up into the case'the asphalt mastic is arranged with an underlying flap A to make a secure joint, and the asphalt mastic is made sufficiently warm on the flap so that when the outer portion of the wall is placed thereon it will adhere thereto and thereby form a water-tight joint.

The strips form a large part of the exposed outer surface, strengthen the structure and protect the asphaltum from abrasion or inury in handling.

It will, be understood that the as haltum compound must beof sufficient thic mess to hold the strips, which when being placed on the asphalt embed themselves therein, so that the asphalt extends upwardly on the side of the strip and thereby serves to securely hold the strip in position.

I claim As a new ariticle of manufacture, a material comprising a layer of adhesive asphaltum compound combined with a suitable backing and a series of strips such as wood, extending crosswise of the material at desired distances apart and embedded in the asphaltum compound surface, the major portion of the com ound between the strips being comparative y thin as comparedv with the compound in proximity to the strips whereby the longitudinal bending of the material only is permitted as specified.

GEORGE FREDERICK BISHOPRIC.

Witnesses:

E. MCEAOHERA, H. SUET. 

